ابن تيمية يصرّح بأن نَجْد هي قرن الشيطان الوارد ذكره في الأحاديث:

قال ابن تيمية فيما ردَّ به على (تأسيس التقديس) للإمام الرازي ما نصُّه:

(... قد تواتر عن النبي إخباره بأن الفتنة ورأس الكفر من المشرق الذي هو مشرق مدينته كنجد وما يشرق عنها.. ثم ساق بعض الأحاديث الواردة في ذلك في الصحيحين وغيرهما إلى أن قال: ولا ريب أن من هؤلاء ظهرت الردة وغيرها من الكفر، من جهة مسيلمة الكذاب وأتباعه وطليحة الأسدي وأتباعه، وسجاح وأتباعها، حتى قاتلهم أبو بكر الصديق ومن معه من المؤمنين، حتى قتل من قتل، وعاد إلى الإسلام من عاد مؤمنا أو منافقا).

بيان تلبيس الجهمية لابن تيمية ج1 ص 17-24.

Ibn Taymiyya states that Najd is the horn of Shaytan whose mention is found in the Hadiths:

Ibn Taymiyya said in his reply to ta'sis al-taqdis of al-Imam al-Razi*:

"Indeed, it is mass transmitted (tawatur) from the Prophet (sallallahu 'alaihi wa sallam) - his narration which mentions that trials/tribulations (fitna), and the peak of disbelief are from the east - which is the east of Madina - as in Najd, and what is (further) east from it..."

Then he quoted some of the Hadiths found regarding this in the two Sahihs (Bukhari and Muslim) and other than them until he said:

"And there is no doubt that from these, apostasy and other forms of disbelief became apparent from the likes of Musaylama al-Kadhab and his followers, Tulayha al-Asadi and his followers, Sujah and her followers, until Abu Bakr al-Siddiq (radhiallahu 'anh) and those who were with him from the believers killed them. Until whoever was killed was killed, and whoever returned to Islam returned as a believer or a hypocrite."

[Bayan Talbis al-Jahmiyya of ibn Taymiyya, vol. 1 pg. 17-24]

*It seems that ibn Taymiyya argues the above because al-Razi's work had come from the east.